Exodus 25:17-19

`And thou hast made a mercy-seat of pure gold, two cubits and a half its length, and a cubit and a half its breadth;

and thou hast made two cherubs of gold, beaten work dost thou make them, at the two ends of the mercy-seat;

and make thou one cherub at the end on this side, and one cherub at the end on that; at the mercy-seat ye do make the cherubs on its two ends.